Much of the English communication that takes place within business circles all over the world occurs between non-native speakers.
[1] The strict rules of grammar are sometimes ignored in such cases when, for example, a stressed negotiator's only goal is to reach an agreement as quickly as possible.
For some, it focuses on vocabulary and topics used in the worlds of business, trade, finance, and international relations.
For others, it refers to the communication skills used in the workplace and focuses on the language and skills needed for typical business communication such as presentations, negotiations, meetings, small talk, socializing, correspondence, report writing, and a systematic approach.
In both of these cases, it can be taught to native speakers of English, for example, high school students preparing to enter the job market.